4-[(2-methyl-1,3-thiazol-4-yl)methoxy]benzoic Acid → N-{4-methyl-3-[4-(2-methylthiazol-4-ylmethoxy)benzamido]phenyl}dibenzofuran-4-carboxamide

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Reaction Steps

4-(2-Methylthiazol-4-ylmethoxy)benzoic acid (0.095 g) was added to a stirred mixture of N-(3-amino-4-methylphenyl)dibenzofuran-4-carboxamide (0.12 g), diisopropyethyllamine (0.2 ml), 2-(7-azabenzotriazol-1-yl)-1,1,3,3-tetramethyluronium hexafluorophosphate(V) (0.134 g) and methylene chloride (22 ml) and the mixture was stirred at ambient temperature for 16 hours. The mixture was evaporated and the residue was purified by column chromatography on an ion exchange column (isolute SCX column) using initially a 1:1 mixture of ethyl acetate and methanol and then a 99:1 mixture of methanol and a saturated aqueous ammonium hydroxide solution as eluent. The product so obtained was triturated under ethyl acetate. There was thus obtained the title compound (0.051 g); NMR Spectrum: (DMSOd6) 2.25 (s, 3H), 2.65 (s, 3H), 5.2 (s, 2H), 7.15 (d, 2H), 7.25 (d, 1H),7.4-7.65 (m, 5H), 7.8-7.9 (m, 3H), 7.98 (d, 2H), 8.2 (d, 1H), 8.35 (d, 1H), 9.8 (d, 1H), 10.4 (s, 1H); Mass Spectrum: M+H+ 548.

Provenance & Evidence